Korea Apostille & Embassy Legalization for Overseas Documents
When a document issued in Korea will be used abroad, the first question is whether the destination is covered by the 1961 Hague Apostille Convention. For a country where the Convention applies in relation to Korea, a Korean Apostille generally replaces diplomatic or consular legalization. For a non-Convention destination, the usual route is Korean consular authentication followed by authentication or legalization at the destination country’s embassy or consulate in Korea.
Request Document Authentication Assistance →Apostille vs. Embassy Legalization: Which Procedure Applies?
Convention Destinations
If the Apostille Convention applies between Korea and the destination, an Apostille issued by a competent Korean authority generally replaces additional legalization by the destination country’s embassy or consulate. Notarization may still be required before the Apostille for certain private documents.
Non-Convention Destinations
For a destination where the Apostille Convention does not apply, Korean documents normally proceed through any required notarization, Korean headquarters consular authentication, and then authentication by the destination country’s embassy or consulate in Korea.
Public vs. Private Documents
Government and court-issued certificates may qualify directly for authentication, while powers of attorney, contracts, company-issued certificates and translations often require an appropriate notarization step first.
Korean Apostilles and Consular Authentication
Korea’s official e-Apostille service supports eligible electronic documents from multiple public authorities. Offline Apostille and headquarters consular-authentication services are handled through Korea’s designated competent authorities and the Overseas Koreans Agency service structure.
e-Apostille
Eligible electronic documents can be authenticated online when the issuing authority and document type are supported by the official Korean e-Apostille system.
Offline Apostille
Originals, notarized private documents and documents outside the electronic service may require an offline Apostille procedure.
Consular Authentication
For non-Convention destinations, Korean headquarters consular authentication is generally the Korean step before the relevant foreign embassy or consulate in Korea.
Apostille Convention Countries in Effect as of September 22, 2026
The HCCH status table lists 130 Contracting Parties. Thailand has joined but its Convention entry into force is scheduled for February 28, 2027. Accordingly, this page separately lists the 129 countries and territories for which the Convention is already in force as of September 22, 2026. Viet Nam entered into force on September 11, 2026.
Non-Apostille Countries and Countries Where the Convention Is Not Yet in Force
For the destinations below, the 1961 Apostille Convention is not currently in force. Korean documents will therefore generally require the legalization route, subject to bilateral agreements, document-specific exemptions and the requirements of the receiving authority. Thailand is shown separately because accession is complete but entry into force is still pending.
Viet Nam Apostille: Convention in Force Since September 11, 2026
Viet Nam Is Now an Apostille Convention Country
Viet Nam deposited its instrument of accession on December 31, 2025, and the Convention entered into force for Viet Nam on September 11, 2026. For documents covered by the Convention between Korea and Viet Nam, the Korean Apostille procedure now replaces the former embassy-legalization chain.
Visit VietnamApostille.com for specialized guidance →Personal & Family Documents
Family Relation Certificates, Basic Certificates, Marriage Relation Certificates, criminal-record documents, resident-registration documents, diplomas and transcripts are common examples. The proper process depends on the issuing authority and intended use.
Corporate & Export Documents
Corporate records, POAs, LOAs, Certificates of Free Sale, contracts, employment certificates and career certificates require review of whether the document is public or private and whether notarization is required before Apostille.
T-ONE Apostille Practice Cases
Viet Nam Apostille Procedure Change
A 2026 T-ONE practice article explaining the transition from Vietnamese embassy legalization to the Apostille procedure.
View the Korean article →U.S. Apostille & Translation Case
A practical case involving a U.S. university admission document, Apostille and Korean translation/notarization for an official leave application.
View the Korean case →LOA, CFS & Corporate Documents for India
A corporate-document case involving Apostille processing for cosmetics registration, including LOA, Certificate of Free Sale and manufacturer documentation.
View the Korean case →Frequently Asked Questions
Do documents for an Apostille Convention country also need embassy legalization?
Generally no. When the Convention applies between Korea and the destination and the document is covered by the Convention, a Korean Apostille replaces diplomatic or consular legalization. Notarization, translation and receiving-authority format requirements remain separate issues.
Can a private document receive an Apostille directly?
Not always. Powers of attorney, contracts, company-issued documents and translations commonly need an appropriate notarization before the Apostille or consular-authentication stage.
Is China an Apostille Convention country?
Yes. The Convention entered into force for mainland China on November 7, 2023. Covered documents between Korea and China generally use the Apostille procedure rather than the former consular legalization chain.
Does a Korean document for Viet Nam still need Vietnamese Embassy authentication?
For documents covered by the Convention, generally no. The Convention entered into force for Viet Nam on September 11, 2026, so the Apostille procedure now replaces the former embassy-legalization route.
Can I use an Apostille for Thailand now?
Not yet under Thailand’s newly joined Convention status. Thailand’s entry into force is scheduled for February 28, 2027, so the applicable legalization procedure should be checked for documents submitted before that date.